package com.atguigu.flink.chapter08;

import com.atguigu.flink.bean.AdsClickLog;
import com.atguigu.flink.bean.LoginEvent;
import com.atguigu.flink.util.AtguiguUtil;
import org.apache.flink.api.common.eventtime.WatermarkStrategy;
import org.apache.flink.api.common.functions.MapFunction;
import org.apache.flink.api.common.state.ReducingState;
import org.apache.flink.api.common.state.ReducingStateDescriptor;
import org.apache.flink.api.common.state.ValueState;
import org.apache.flink.api.common.state.ValueStateDescriptor;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.KeyedProcessFunction;
import org.apache.flink.streaming.api.functions.windowing.ProcessWindowFunction;
import org.apache.flink.streaming.api.windowing.windows.GlobalWindow;
import org.apache.flink.util.Collector;
import org.apache.flink.util.OutputTag;

import java.text.SimpleDateFormat;
import java.time.Duration;
import java.util.List;

public class Flink06_Project_High_Login {
    public static void main(String[] args) {
        Configuration conf = new Configuration();
        conf.setInteger("rest.port", 20000);
        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(conf);
        env.setParallelism(1);

        env
                .readTextFile("input/LoginLog.csv")
                .map(new MapFunction<String, LoginEvent>() {
                    @Override
                    public LoginEvent map(String value) throws Exception {
                        String[] data = value.split(",");
                        return new LoginEvent(
                                Long.valueOf(data[0]),
                                data[1],
                                data[2],
                                Long.parseLong(data[3]) * 1000
                        );
                    }
                })
                .assignTimestampsAndWatermarks(
                        WatermarkStrategy
                                .<LoginEvent>forBoundedOutOfOrderness(Duration.ofSeconds(3))
                                .withTimestampAssigner((log, ts) -> log.getEventTime())
                )
                .keyBy(LoginEvent::getUserId)
                .countWindow(2, 1)
                .process(new ProcessWindowFunction<LoginEvent, String, Long, GlobalWindow>() {
                    @Override
                    public void process(Long key, Context ctx, Iterable<LoginEvent> elements, Collector<String> out) throws Exception {
                        List<LoginEvent> loginEvents = AtguiguUtil.toList(elements);
                        if (loginEvents.size() == 2) {
                            LoginEvent event1 = loginEvents.get(0);
                            LoginEvent event2 = loginEvents.get(1);

                            String eventType1 = event1.getEventType();
                            String eventType2 = event2.getEventType();

                            Long ts1 = event1.getEventTime();
                            Long ts2 = event2.getEventTime();

                            if ("fail".equals(eventType1) && "fail".equals(eventType2) && Math.abs(ts1 - ts2) <= 2000) {
                                out.collect(key + " 在恶意登录....");
                            }
                        }
                    }
                })
                .print();

        try {
            env.execute();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
